sys-ctl-hlth-msmtp

Description

This Ansible role sends periodic health check emails using msmtp to verify that your mail transport agent is operational. It deploys a simple script and hooks it into a systemd service and timer, with failure notifications sent via Telegram.

Overview

Optimized for Archlinux, this role creates the required directory structure, installs and configures the sys-ctl-hlth-check script, and integrates with the sys-ctl-alm-telegram role. It uses the sys-timer role to schedule regular checks based on your customizable OnCalendar setting.

Cosmos

The diagram places sys-ctl-hlth-msmtp in the Infinito.Nexus cosmos: the components it deploys (capabilities), the central services it consumes (dependencies), and its outward reach (federation and bridged external networks).

flowchart LR
    subgraph role [sys-ctl-hlth-msmtp 💻]
        svc_msmtp["msmtp"]
    end

Solid 1:1 edges are fixed relationships; dashed 0..1 edges are conditional (enabled only in matching deployments); red 0..0 edges are turned off in this role. Node markers show the role’s deploy modes (💻 host, 🐳 compose, 🐝 swarm); ❌ marks a service that is explicitly turned off, and ⚙️ an Ansible role dependency declared in meta/main.yml.

Purpose

The sys-ctl-hlth-msmtp role ensures that your mail transport system stays available by sending a test email at defined intervals. If the email fails, a Telegram alert is triggered, allowing you to detect and address issues before they impact users.

Features

  • Directory & Script Deployment: Sets up sys-ctl-hlth-msmtp/ and deploys a templated Bash script to send test emails via msmtp.

  • Systemd Service & Timer: Provides .service and .timer units to run the check and schedule it automatically.

  • Failure Notifications: Leverages sys-ctl-alm-telegram to push alerts when the script exits with an error.

  • Configurable Schedule: Define your desired check frequency using the on_calendar_health_msmtp variable.

  • Email Destination: Specify the recipient via the lookup('users', 'administrator').email variable.

Credits

Implemented by Kevin Veen-Birkenbach. Part of the Infinito.Nexus Project and maintained by Kevin Veen-Birkenbach. Licensed under the Infinito.Nexus Community License (Non-Commercial).